Electronic device for displaying alignment state for wireless charging

Abstract

An electronic device is disclosed, including a magnetic member, a position sensor configured to detect a change in a magnetic force of the magnetic member, a display, and a processor. The processor is configured to: when the magnetic member approaches an external electronic device, detect the change in the magnetic force of the magnetic member through the position sensor, and based on the detected change, display, on the display, a graphic indicating a direction in which the magnetic member is to be moved to align the electronic device with an external device for wireless charging. Another electronic device is disclosed, including an RF coil, a shielding sheet having at least two portions with two divergent magnetic permeabilities, and a processor configured to: control the RF coil to generate the wireless charging signal and transmit the wireless charging signal, wherein a magnetic member included in an external electronic device is changed in magnetic force values when approaching the at least two portions.

What is claimed is: 
     
       1. An electronic device, comprising:
 a magnetic member; 
 a first RF coil configured to transmit and receive a wireless charging signal, 
 a position sensor configured to detect a change in a magnetic force of the magnetic member; 
 a display; and 
 a processor operatively connected with the position sensor and the display, 
 wherein the processor is configured to: 
 when the magnetic member approaches an external electronic device, detect the change in the magnetic force of the magnetic member through the position sensor; and 
 based on the detected change, display, on the display, a graphic indicating a direction in which the magnetic member is to be moved to align the electronic device with an external device for wireless charging, 
 wherein the external electronic device includes a second RF coil configured to transmit and receive the wireless charging signal with the first RF coil, and a shielding sheet disposed on one surface of the second RF coil, the shielding sheet including portions having different magnetic permeabilities, and 
 wherein the processor is configured to detect, through the position sensor, the change in the magnetic force as changed by proximity of the shielding sheet. 
 
     
     
       2. The electronic device of  claim 1 , further comprising:
 an inertial sensor, 
 wherein the processor is configured to: 
 detect a direction of movement of the magnetic member through the inertial sensor; and 
 when detecting an increase in the magnetic force is via the position sensor with movement of the magnetic member in a first direction via the inertial sensor, display the graphic to indicate the magnetic member is to be moved in the first direction. 
 
     
     
       3. The electronic device of  claim 2 , wherein the processor is configured to:
 when detecting a decrease in the magnetic force is via the position sensor with movement of the magnetic member in a second direction via the inertial sensor, display, on the display, the graphic to indicate the magnetic member is to be moved in a third direction opposite to a second direction. 
 
     
     
       4. The electronic device of  claim 1 , wherein the magnetic member is aligned with a center of the first RF coil, and
 wherein the magnetic force of the magnetic member reaches a maximum value when the magnetic member and a center of the second RF coil are aligned. 
 
     
     
       5. The electronic device of  claim 1 , wherein the position sensor is aligned with the magnetic member. 
     
     
       6. The electronic device of  claim 1 , wherein the shielding sheet includes at a first portion and a second portion, each having different magnetic permeabilities,
 wherein the position sensor detects a first magnetic force change of the magnetic member when the magnetic member moves over a first portion of the shielding sheet, 
 wherein the position sensor detects a second magnetic force change of the magnetic member when the magnetic member moves over a second portion of the shielding sheet, and 
 wherein a slope of the first magnetic force change is different from a slope of the second magnetic force change. 
 
     
     
       7. The electronic device of  claim 1 , wherein the shielding sheet includes a first portion having a first magnetic permeability, a second portion having a second magnetic permeability, a third portion having a third magnetic permeability, and a fourth portion having a fourth magnetic permeability, and
 wherein the position sensor: 
 measures a first magnetic force change when the magnetic member moves over the first portion; 
 measures a second magnetic force change when the magnetic member moves over the second portion; 
 measures a third magnetic force change when the magnetic member moves over the third portion; and 
 measures a fourth magnetic force change when the magnetic member moves over the fourth portion. 
 
     
     
       8. The electronic device of  claim 7 , wherein the processor is configured to: determine whether the magnetic member is disposed at the first portion, the second portion, the third portion, or the fourth portion based on detecting, by the position sensor, one of the first magnetic force change, the second magnetic force change, the third magnetic force change, and the fourth magnetic force change. 
     
     
       9. The electronic device of  claim 8 , further comprising:
 a memory, 
 wherein the processor is configured to store, in the memory, a position-magnetic force table including the first magnetic force change, the second magnetic force change, the third magnetic force change, and the fourth magnetic force change. 
 
     
     
       10. The electronic device of  claim 9 , wherein the processor is configured to:
 determine a present position of the magnetic member by comparing the change in magnetic force of the magnetic member detected through the position sensor with the position-magnetic force table, wherein the direction indicated by the graphic in which the magnetic member is to be moved aligns the center of the first RF coil and the center of the second RF coil, respective to the present position of the magnetic member. 
 
     
     
       11. An electronic device, comprising:
 an RF coil configured to transmit a wireless charging signal; 
 a shielding sheet disposed on one surface of the RF coil; and 
 a processor configured to: 
 control the RF coil to generate the wireless charging signal and transmit the wireless charging signal, 
 wherein the shielding sheet includes at least two portions having different magnetic permeabilities, and 
 wherein a magnetic member included in an external electronic device is changed in magnetic force values when approaching the at least two portions. 
 
     
     
       12. The electronic device of  claim 11 , wherein the shielding sheet includes a magnetism change material layer, and
 wherein a magnetic force value of the magnetic member is determined based on a magnetic permeability of the magnetism change material layer. 
 
     
     
       13. The electronic device of  claim 12 , wherein the shielding sheet includes a first portion and a second portion, and
 wherein the magnetism change material layer has a different thickness between the first portion and the second portion. 
 
     
     
       14. The electronic device of  claim 12 , wherein the shielding sheet includes a first portion and a second portion,
 wherein the magnetism change material layer is formed of an alloy of a plurality of metals, and 
 wherein composition ratios of the plurality of metals included in the magnetism change material layer are different between the first portion and the second portion.